![recreational mathematics - How to prove the number of solutions to nine dots puzzle - Mathematics Stack Exchange recreational mathematics - How to prove the number of solutions to nine dots puzzle - Mathematics Stack Exchange](https://i.stack.imgur.com/9i9bO.png)
recreational mathematics - How to prove the number of solutions to nine dots puzzle - Mathematics Stack Exchange
There are 9 dots spaced out in square shape (3x3). How do you connect all the dots without lifting your pen and using 3 straight lines? - Quora
![Regarding the 9 dots 4 lines problem, is there a general solution/algorithm for n*n grids and (n+1) lines? : r/math Regarding the 9 dots 4 lines problem, is there a general solution/algorithm for n*n grids and (n+1) lines? : r/math](https://external-preview.redd.it/-s6-4yUMhubxhM5FAeBPPIG4yI9wB0MYKp5_7fqgzvY.jpg?auto=webp&s=f7588cc6b946dc7f2aa022b96343d19c9fe63beb)